DateTimePicker.DropDown Event

 

Occurs when the drop-down calendar is shown.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

Public Event DropDown As EventHandler

For more information about handling events, see Handling and Raising Events.

The following code example demonstrates handling the DropDown event of a DateTimePicker and using the MinDateTime and MaxDateTime fields. To run this example paste the following code in a form that contains a DateTimePicker named DateTimePicker1.


' When the calendar drops down, display a MessageBox indicating 
' that DateTimePicker will not accept dates before MinDateTime or 
' after MaxDateTime. Use a StringBuilder object to build the string
' for efficiency.
Private Sub DateTimePicker1_DropDown(ByVal sender As Object, _
    ByVal e As EventArgs) Handles DateTimePicker1.DropDown

    Dim messageBuilder As New System.Text.StringBuilder
    messageBuilder.Append("Choose a date after: ")
    messageBuilder.Append(DateTimePicker.MinDateTime.ToShortDateString)
    messageBuilder.Append(" and a date before: ")
    messageBuilder.Append(DateTimePicker.MaxDateTime.ToShortDateString)
    MessageBox.Show(messageBuilder.ToString())
End Sub

.NET Framework
Available since 1.1
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